Ultimele cursuri apărute

crisstel.ro Arduino – software PWM simula viteza de rotație semanal analogic digital Arduino – software PWM Termenul de PWM provine din limba engleza de la Pulse Width Modulation ceea ce înseamna Modulația Pulsurilor în Lungime și este o tehnica de a simula un semnal analogic folosindu-te de un semnal digital Semnalul digital poate lua doar 2 stări: ON sau OFF „1“ sau „0“ ; 5V sau 0V Un semnal PWM te ajută să obții o mulțime de valori cuprinse intre 5 și 0V De exemplu poți obține 2.5V ceea ce înseamna ca poți ajusta luminozitatea unui LED sau viteza de rotație a unui motor Semnalele PWM sunt utile în următoarele situații: atunci când vrei sa creezi jocuri de lumini dacă ai la dispoziție o multitudine de LED-uri sau matrici si atunci când vrei sa variezi viteza de rotație a unui motor sau când vrei sa controlezi unghiul unui servomotor dacă dorești sa controlezi automat temperatura unei camere și să folosești un element de încălzire al cărui răspuns să fie proporțional cu semnalul PWM dorești să produci sunete de frecvente diferite folosindu-te de un difuzor sau vrei sa ajustezi automat tensiunea unei surse de alimentare Semnalele PWM sunt foarte utile în diverse situații iar placa Arduino nu duce lipsa de aceasta funcție
Cursuri

Arduino – software PWM

Termenul de PWM provine din limba engleza de la Pulse Width Modulation ceea ce înseamna Modulația Pulsurilor în Lungime și este o tehnica de a

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crisstel.ro Cronometru cu Arduino Dacă un obiect trece prin fata senzorului suficient de aproape atunci cronometru cu Arduino este declanșat Dacă același obiect trece din nou prin fata senzorului atunci cronometrul este oprit Cu acest cronometru poți măsura timpi de ordinul minutelor secundelor sau chiar milisecundelor poți folosi cronometrul pentru a măsura timpii roboților urmăritori de linie Acum este momentul să încarci sketch-ul în placa Arduino Placa Arduino citește în mod constant valoarea senzorului de distanță
Cursuri

Cronometru cu Arduino

În acest tutorial vei descoperi cum se poate construi un cronometru simplu care poate măsura perioada de timp cuprinsă între 2 evenimente. Cronometrul nostru va

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crisstel.ro Raspberry PI – Emițător FM radio În acest tutorial vei descoperi cum se poate transforma placa Raspberry PI într-un emițător FM. Poți asculta melodiile preferate pe o distanta relativ scurtă în jurul plăcii (câțiva zeci de metri) iar pentru a realiza acest lucru este nevoie de o antena Antena va fi un fir lung de 20 cm care se conectează la pinul GPIO4 sau pinul 7 ar trebui să dureze mai puțin de o jumătate de oră pentru a-ți configura propria stație de emisie FM și a emite într-o zonă locală ar trebui să poți acoperi o suprafață de 50 m rază care ar trebui să fie suficientă pentru a fi transmisă spre exemplu în școală
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Raspberry PI – Emițător FM

Emițător FM În acest tutorial vei descoperi cum se poate transforma placa dezvoltare Raspberry PI într-un emițător FM. Poți asculta melodiile preferate pe o distanta

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crisstel.ro Controller PID reglarea automata controlată
Cursuri

Controller PID cu Arduino

Controlul PID (proporțional, integral, derivativ) este o metoda utilizata la scara larga în reglarea proceselor, cum ar fi reglarea temperaturii, reglarea nivelului de apa într-o

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crisstel.ro Arduino și librăria TVOut semanl video PAL, sketch ecranul goame of life fire de conexiune rezistor breadboard n acest tutorial vei descoperi cum se poate programa o placă Arduino pentru a genera semnal video format PAL În prima parte a tutorialului vei instala librăria Primul program afișează pe ecranul televizorului un desen forme geometrice și un cub animat în 3D Al doilea program afișează pe ecran jocul Game of Life Această librărie este capabilă de a genera diverse tipuri de semnale Deschide exemplul DemoPAL din librăria TVOut și încarcă-l în placa Arduino Game of Life este un „automat celular“ creat de un matematician britanic pe nume John Horton Conway Jocul se desfășoară pe o matrice bidimensionala alcătuită din celule fiecare luând una din cele 2 stări: on sau off
Cursuri

Arduino și librăria TVOut

În acest tutorial vei descoperi cum se poate programa o placă Arduino pentru a genera semnal video format PAL, pentru televizoarele obișnuite. În prima parte

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